Dominant Role of Coplanar Inflows in Driving Disk Evolution Revealed by Gas-Phase Metallicity Gradients

Kavli Affiliate: Yingjie Peng | First 5 Authors: Cheqiu Lyu, Enci Wang, Hongxin Zhang, Yingjie Peng, Xin Wang | Summary: Using spatially resolved spectroscopic data from the MaNGA sample, we investigate the parameters influencing the radial gradients of gas-phase metallicity ($nablalog(mathrm{O/H})$), to determine whether disk formation is primarily driven by coplanar gas inflow or by […]


Continue.. Dominant Role of Coplanar Inflows in Driving Disk Evolution Revealed by Gas-Phase Metallicity Gradients

The life cycle of giant molecular clouds in simulated Milky Way-mass galaxies

Kavli Affiliate: Mark Vogelsberger | First 5 Authors: Yang Ni, Hui Li, Mark Vogelsberger, Laura V. Sales, Federico Marinacci | Summary: In this work, we trace the complete life cycle of individual GMCs in high-resolution Milky Way-mass galaxy simulations to determine how different stellar feedback mechanisms and galactic-scale processes govern cloud lifetimes, mass evolution, and […]


Continue.. The life cycle of giant molecular clouds in simulated Milky Way-mass galaxies

JADES: Average Nitrogen Enhancement in High-Redshift Broad-Line Active Galactic Nuclei

Kavli Affiliate: Roberto Maiolino | First 5 Authors: Yuki Isobe, Roberto Maiolino, Francesco D’Eugenio, Mirko Curti, Xihan Ji | Summary: The unexpectedly high nitrogen-to-oxygen (N/O) ratios observed in high-redshift (z) galaxies have challenged our understanding of early star formation. Notably, many of these nitrogen-rich galaxies show signatures of active galactic nuclei (AGNs), suggesting a possible […]


Continue.. JADES: Average Nitrogen Enhancement in High-Redshift Broad-Line Active Galactic Nuclei

JADES: Nitrogen Enhancement in High-Redshift Broad-Line Active Galactic Nuclei

Kavli Affiliate: Roberto Maiolino | First 5 Authors: Yuki Isobe, Roberto Maiolino, Francesco D’Eugenio, Mirko Curti, Xihan Ji | Summary: The unexpectedly high nitrogen-to-oxygen (N/O) ratios observed in high-redshift (z) galaxies have challenged our understanding of early star formation. Notably, many of these nitrogen-rich galaxies show signatures of active galactic nuclei (AGNs), suggesting a possible […]


Continue.. JADES: Nitrogen Enhancement in High-Redshift Broad-Line Active Galactic Nuclei

Using Infrared Dust Echoes to Identify Bright Quasi-periodic Eruption Sources

Kavli Affiliate: Dheeraj R. Pasham | First 5 Authors: Dheeraj R. Pasham, Eric Coughlin, Sjoert van Velzen, Jason Hinkle, | Summary: Quasi-periodic eruptions (QPEs) are recurring soft X-ray outbursts from galactic nuclei and represent an intriguing new class of transients. Currently, 10 QPE sources are reported in the literature, and a major challenge lies in […]


Continue.. Using Infrared Dust Echoes to Identify Bright Quasi-periodic Eruption Sources

CSST Large Scale Structure Analysis Pipeline: III. Emission-line Redshift Measurement for Slitless Spectra

Kavli Affiliate: Hu Zhan | First 5 Authors: Jipeng Sui, Hu Zou, Xiaohu Yang, Xianzhong Zheng, Run Wen | Summary: The China Space Station Telescope (CSST) is a forthcoming space-based optical telescope designed to co-orbit with the Chinese Space Station. With a planned slitless spectroscopic survey spanning a broad wavelength range of $255-1000$nm and an […]


Continue.. CSST Large Scale Structure Analysis Pipeline: III. Emission-line Redshift Measurement for Slitless Spectra

A Catalog of Local Universe Fast Radio Bursts from CHIME/FRB and the KKO Outrigger

Kavli Affiliate: Kiyoshi W. Masui | First 5 Authors: Mandana Amiri, Daniel Amouyal, Bridget C. Andersen, Shion Andrew, Kevin Bandura | Summary: We present the first catalog of fast radio burst (FRB) host galaxies from CHIME/FRB Outriggers, selected uniformly in the radio and the optical by localizing 81 new bursts to 2” x ~60” accuracy […]


Continue.. A Catalog of Local Universe Fast Radio Bursts from CHIME/FRB and the KKO Outrigger

A Catalog of Local Universe Fast Radio Bursts from CHIME/FRB and the KKO Outrigger

Kavli Affiliate: Kiyoshi W. Masui | First 5 Authors: The CHIME/FRB Collaboration, :, Mandana Amiri, Daniel Amouyal, Bridget C. Andersen | Summary: We present the first catalog of fast radio burst (FRB) host galaxies from CHIME/FRB Outriggers, selected uniformly in the radio and the optical by localizing 81 new bursts to 2” x ~60” accuracy […]


Continue.. A Catalog of Local Universe Fast Radio Bursts from CHIME/FRB and the KKO Outrigger

Simplify RLHF as Reward-Weighted SFT: A Variational Method

Kavli Affiliate: Zhuo Li | First 5 Authors: Yuhao Du, Zhuo Li, Pengyu Cheng, Zhihong Chen, Yuejiao Xie | Summary: Reinforcement Learning from Human Feedback (RLHF) is crucial for aligning Large Language Models (LLMs) with human values. However, RLHF has been continuously challenged by its high complexity in implementation and computation consumption. Even with recent […]


Continue.. Simplify RLHF as Reward-Weighted SFT: A Variational Method

Simplify RLHF as Reward-Weighted SFT: A Variational Method

Kavli Affiliate: Zhuo Li | First 5 Authors: Yuhao Du, Zhuo Li, Pengyu Cheng, Zhihong Chen, Yuejiao Xie | Summary: Reinforcement Learning from Human Feedback (RLHF) is crucial for aligning Large Language Models (LLMs) with human values. However, RLHF has been continuously challenged by its high complexity in implementation and computation consumption. Even with recent […]


Continue.. Simplify RLHF as Reward-Weighted SFT: A Variational Method